Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Study of Corrosion Resistance in Super-Duplex, Tungsten-Containing Stainless Steel

텅스텐이 첨가된 슈퍼 2상 스테인리스강의 내부식성에 관한 연구

  • Choi, Han-Gul (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Park, Hyung-Gyun (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Jung, Byung-Ho (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Han, Hyun-Sung (Dept. of Industrial Fabrication Korea Polytechnics) ;
  • Bae, Dong-Su (Dept. of Advanced Materials Engineering, Dong-Eui University) ;
  • Kang, Chang-Yong (Dept. of Metallurgical Engineering, Pukyong National University)
  • Received : 2010.08.06
  • Accepted : 2010.09.16
  • Published : 2010.10.31
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Abstract

The effect of aging on the precipitation of the $\sigma$ phase and corrosion resistance in W-substituted, super-duplex stainless steel was investigated. The volume fraction of the $\sigma$ phase and the current density increased as the aging temperature increased up to $750^{\circ}C$, and, then, they decreased. As aging time increased, the volume fraction of the $\sigma$ phase and the current density also increased. The $\sigma$ phase considerably influenced to corrosion resistance. When Mo was substituted for W in super-duplex stainless steel, the volume fraction of the $\sigma$ phase and the current density both decreased markedly.

Keywords

References

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